The engine wiring harness on my 1984 245 is starting to look kind of questionable. I guess about as expected for 200K miles. I want to replace it before it strands me somewhere; I do a lot of long distance driving.

I know the harness is very expensive for the B23F. No, I don't want to make my own --- I know it can be done, but it's just not something I want to try. How tough is it to install myself? With the intake manifold in place, it's hard to see where all these wires go and what's involved in changing them. I've got the Bentley manual...what I'd really like, though, is a "from the front" description of the challenges involved.

And, with the intake manifold removed, are there any other "while you're at it" things I should consider doing? Perhaps those temperature sensors?